Possible bug with mixin template functions and variadic params

[Koroskin Denis]

On Thu, 24 Jul 2008 17:22:56 +0400, Derek Ney <derek at hipgraphics.com>  
wrote:

> I posted the following the the language forum thinking perhaps I was  
> doing something wrong, but it seems that this may be a bug in the 2.014  
> compiler. Here is what I posted:
>
> I am trying to create a set of methods that take a variable number of  
> arguments (at compile time). I would have liked to have used template  
> functions to do that, but I need the functions to be virtual, and  
> template functions cannot be virtual. So I thought I would try to use a  
> mixin of a variadic template function. But I am getting a weird compiler  
> error with my simple test program. Here is the test program:
>
>      1  import std.stdio;
>      2
>      3  template TCALL(ARGS...)
>      4  {
>      5    void makecall(ARGS args)
>      6    {
>      7      writefln("tcall...", args);
>      8    }
>      9  }
>     10
>     11  mixin TCALL!();
>     12  mixin TCALL!(int);
>     13  mixin TCALL!(int,int);
>     14
>     15
>     16  class Method
>     17  {
>     18    mixin TCALL!();
>     19    mixin TCALL!(int);
>     20    mixin TCALL!(int,int);
>     21  }
>     22
>     23  void main()
>     24  {
>     25    auto m = new Method;
>     26
>     27    m.makecall(0,1);
>     28    makecall(0,1);
>     29  }
>
> And when I compile with "Digital Mars D Compiler v2.014" I get this  
> error:
>
> test6.d(27): Error: m.makecall is not a declaration
> test6.d(27): Error: function expected before (), not 1 of type int
>
> Can anyone explain what is going on here? It seems like it should work.  
> Note that if you comment out line 27 and compile it compiles fine and  
> runs producing the expected output:
>
> tcall...01
>
> -Thanks, Derek
>
>

Bugs should be posted to bugzilla: http://d.puremagic.com/issues/
This newsgroup is just mirroring posted bug reports and used for bug  
discussion that should not go to bugzilla for some reason.